12V 5A SMPS Switching Power Supply

Overview

The 12V 5A Switching Power Supply is a high-efficiency regulated power source that converts standard AC mains power $(110V/220V)$ into a clean, stable $12V$ DC output. Encased in a sturdy, ventilated aluminum housing, it is built to dissipate heat effectively without the need for a noisy fan. This unit is a favorite for hobbyists building 3D printers, CNC machines, or sophisticated home automation hubs where multiple $12V$ components need to be powered simultaneously.

Key Features

• Industrial Build: The “honeycomb” aluminum shell provides excellent heat dissipation and protects internal components.

• Voltage Adjustment: Includes a built-in “VADJ” trimmer to fine-tune the output voltage (perfect for compensating for voltage drops over long wires).

• Safe & Reliable: Features integrated protection against over-voltage, overload, and short circuits.

• Dual Input: Selectable input voltage $(110V \text{ or } 220V)$ via a manual switch to suit your local power grid.

• High Efficiency: Modern switching technology ensures minimal energy loss and low heat generation compared to traditional transformers.

Technical Specifications

Feature	Specification
Output Voltage	12V DC (Regulated)
Output Current	5A (Maximum)
Total Power	60 Watts
Input Voltage	AC 110V / 220V (± 15%)
Efficiency	>80%
Shell Material	Aluminum / Stainless Steel
Cooling	Natural Convection (Fanless/Silent)
Dimensions	Approx. 110mm x 78mm x 36mm

Wiring Terminals 

1. L, N: AC Power Input (Live and Neutral)

2. GND (Earth Symbol): AC Ground (Earth)

3. -V: DC Power Output Negative

4. +V: DC Power Output Positive

5. +V ADJ: Output Voltage Adjustment Trimmer